Voltammetric characterisation of silicon-based microelectrode arrays and their application to mercury-free stripping voltammetry of copper ions

Berduque, Alfonso; Lanyon, Yvonne H.; Beni, Valerio; Herzog, Grégoire; Watson, Yvonne; Rodgers, Kenneth; Stam, Frank; Alderman, J.; Arrigan, Damien W. M.

doi:10.1016/j.talanta.2006.05.090

Cited by 92 publications

(115 citation statements)

References 33 publications

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“…The size of the holes and the distances between them to produce a microelectrode were chosen based on those found in previous literature [26][27][28] with at least 10 hemispheres between holes. White light surface profiling was used to visually assess the hole profile and size of the holes (an example is shown in Figure S2 SI).…”

Section: Evaluation Of the Microbiosensor Arraymentioning

confidence: 99%

Design and development of novel screen-printed microelectrode and microbiosensor arrays fabricated using ultrafast pulsed laser ablation

Liébana

Jones

Drago

et al. 2016

Sensors and Actuators B: Chemical

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Design and development of novel screen-printed microelectrode and microbiosensor arrays fabricated using ultrafast pulsed laser ablation. Sensors and Actuators B: Chemical, 231. pp. 384-392. ISSN 0925-4005 Available from: http://eprints.uwe.ac.uk/28503We recommend you cite the published version. The publisher's URL is: http://dx.doi.org/10. 1016/j.snb.2016.02.142 Refereed: Yes (no note) Disclaimer UWE has obtained warranties from all depositors as to their title in the material deposited and as to their right to deposit such material. UWE makes no representation or warranties of commercial utility, title, or fitness for a particular purpose or any other warranty, express or implied in respect of any material deposited. UWE makes no representation that the use of the materials will not infringe any patent, copyright, trademark or other property or proprietary rights. UWE accepts no liability for any infringement of intellectual property rights in any material deposited but will remove such material from public view pending investigation in the event of an allegation of any such infringement. PLEASE SCROLL DOWN FOR TEXT. Accepted ManuscriptTitle: Design and development of novel screen-printed microelectrode and microbiosensor arrays fabricated using ultrafast pulsed laser ablation This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.  The generic platform combines screen-printing and ultrafast pulsed laser technologies. The activity of the enzymatic system was retained after processing by pulse laser ablation. Steady-state responses were obtained using chronoamperometry. A prototype glucose microbiosensor array was developed. . This study provides a new fabrication method for microelectrode and microbiosensor arrays capable for the first time to retain the activity of the enzymatic system after processing by pulse laser ablation.

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Section: Evaluation Of the Microbiosensor Arraymentioning

confidence: 99%

Design and development of novel screen-printed microelectrode and microbiosensor arrays fabricated using ultrafast pulsed laser ablation

Liébana

Jones

Drago

et al. 2016

Sensors and Actuators B: Chemical

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“…where j ss is the steady-state current at a single microdisk electrode, given by eqn (14) 36 j ss ¼ 4nFDCr 0 (14) where, n is the number of electrons transferred, and C is a bulk concentration of electroactive species.…”

Section: The Influence Of the Microdisk Radius And Array Symmetrymentioning

confidence: 99%

Investigating the concept of diffusional independence. Potential step transients at nano- and micro-electrode arrays: theory and experiment

Menshykau

Huang

Rees

et al. 2009

Analyst

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Microelectrode arrays find broad application in electroanalysis offering the enhanced sensitivity associated with microelectrodes, but with a high total current output. Such arrays are often constructed to make the electrodes 'diffusionally independent'. To emphasize that this is a time dependent property, a two-dimensional simulation, in conjunction with the diffusional domain approach, is used to model potential step transient currents at microelectrode arrays. Two types of array, hexagonal and cubic, are considered. In both cases the absolute (not relative) microelectrode separation distance has a significant effect on transient current. Three different regimes of transient current versus time can be observed at microelectrode arrays. At short times the transient response of isolated microelectrodes is seen, then at intermediate times the steady-state response of independent electrodes can be observed. At longer times planar diffusion to the entire array takes over. It follows that only at timescales corresponding to the first two regimes can the electrodes be considered as diffusionally independent. To verify the theory the potential step experiment is performed at a regularly spaced hexagonal iridium microdisk array. Theory is found to be in a good agreement with the experimental results.

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“…Reducing the diameter of disk electrodes is one of the most common, which can be implemented by sealing of wires, with a diameter in the micrometer range, into an insulating material such as glass, followed by grinding. More scalable fabrication techniques are lithography [4][5][6][7] and screen printing [8] . An alternative approach, which is a cost-effective compromise possessing both convergent diffusion and high output signal, is the microband geometry [9] .…”

Section: Introductionmentioning

confidence: 99%

Arrays of Screen‐Printed Graphite Microband Electrodes as a Versatile Electroanalysis Platform

et al. 2014

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Arrays of microband electrodes were developed by screen printing followed by cutting, which enabled the realization of microband arrays at the cut edge. Microband arrays of different designs were characterised with physical and electrochemical methods. In both cases the methods showed that the microband width was around 5 m. Semi-steady-state cyclic voltammetry responses were observed for redox probes.Chronocoulometric measurements showed the establishment of convergent diffusion regimes characterized by current densities similar to those of a single microelectrode.The analytical performance of the elaborated electrode system and its versatility were illustrated with two electrochemical assays: detection of ascorbic acid via direct oxidation and a mediated glucose biosensor fabricated via dip coating. Due to convergent mass transport both systems showed enhancement of the analytical characteristics. The developed approach can be adapted to automated electrode recovery.

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Voltammetric characterisation of silicon-based microelectrode arrays and their application to mercury-free stripping voltammetry of copper ions

Cited by 92 publications

References 33 publications

Design and development of novel screen-printed microelectrode and microbiosensor arrays fabricated using ultrafast pulsed laser ablation

Design and development of novel screen-printed microelectrode and microbiosensor arrays fabricated using ultrafast pulsed laser ablation

Investigating the concept of diffusional independence. Potential step transients at nano- and micro-electrode arrays: theory and experiment

Arrays of Screen‐Printed Graphite Microband Electrodes as a Versatile Electroanalysis Platform

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